Computer Science > Machine Learning
[Submitted on 1 Jun 2021
]
Title: A unified PAC-Bayesian framework for machine unlearning via information risk minimization
Title: 通过信息风险最小化进行机器遗忘的统一PAC-Bayesian框架
Abstract: Machine unlearning refers to mechanisms that can remove the influence of a subset of training data upon request from a trained model without incurring the cost of re-training from scratch. This paper develops a unified PAC-Bayesian framework for machine unlearning that recovers the two recent design principles - variational unlearning (Nguyen et.al., 2020) and forgetting Lagrangian (Golatkar et.al., 2020) - as information risk minimization problems (Zhang,2006). Accordingly, both criteria can be interpreted as PAC-Bayesian upper bounds on the test loss of the unlearned model that take the form of free energy metrics.
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